#region License

/*
 * Copyright 2002-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#endregion

using System;

using NUnit.Framework;

using Spring.Expressions;
using Spring.Objects.Factory.Support;

namespace Spring.Validation
{
    /// <summary>
    /// Unit tests for ValidatorReference class.
    /// </summary>
    /// <author>Aleksandar Seovic</author>
    [TestFixture]
    public class ValidatorReferenceTests
    {
        [Test]
        public void TrueValidatorReference()
        {
            StaticListableObjectFactory factory = new StaticListableObjectFactory();
            factory.AddObject("validator", new TrueValidator());

            ValidatorReference v = new ValidatorReference("true");
            v.ObjectFactory = factory;
            v.Name = "validator";

            IValidationErrors errors = new ValidationErrors();

            Assert.IsTrue(v.Validate(null, null, errors));
            Assert.IsTrue(v.Validate(null, errors));
        }

        [Test]
        public void FalseValidatorReference()
        {
            StaticListableObjectFactory factory = new StaticListableObjectFactory();
            factory.AddObject("validator", new FalseValidator());

            ValidatorReference v = new ValidatorReference();
            v.ObjectFactory = factory;
            v.Name = "validator";

            IValidationErrors errors = new ValidationErrors();
            Assert.IsFalse(v.Validate(null, null, errors));
            Assert.IsFalse(v.Validate(null, errors));
        }

        [Test]
        public void FalseValidatorReferenceNotEvaluatedBecauseWhenExpressionReturnsFalse()
        {
            StaticListableObjectFactory factory = new StaticListableObjectFactory();
            factory.AddObject("validator", new FalseValidator());

            ValidatorReference v = new ValidatorReference("false");
            v.ObjectFactory = factory;
            v.Name = "validator";

            IValidationErrors errors = new ValidationErrors();
            Assert.IsTrue(v.Validate(null, null, errors));
            Assert.IsTrue(v.Validate(null, errors));
        }

        [Test]
        public void ContextNarrowing()
        {
            Inventor context = new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian");
            
            ConditionValidator cv1 = new ConditionValidator("DOB.Year == 1856", null);
            ConditionValidator cv2 = new ConditionValidator("Year == 1856", null);
            
            StaticListableObjectFactory factory = new StaticListableObjectFactory();
            factory.AddObject("cv1", cv1);
            factory.AddObject("cv2", cv2);

            ValidatorReference v1 = new ValidatorReference();
            v1.ObjectFactory = factory;
            v1.Name = "cv1";

            IValidationErrors errors = new ValidationErrors();

            Assert.IsTrue(v1.Validate(context, null, errors));
            Assert.IsTrue(v1.Validate(context, errors));

            ValidatorReference v2 = new ValidatorReference();
            v2.ObjectFactory = factory;
            v2.Name = "cv2";
            v2.Context = Expression.Parse("DOB");

            Assert.IsTrue(v2.Validate(context, null, errors));
            Assert.IsTrue(v2.Validate(context, errors));

            ValidatorReference v3 = new ValidatorReference("false");
            v3.ObjectFactory = factory;
            v3.Name = "cv2";
            v3.Context = Expression.Parse("DOB");

            Assert.IsTrue(v3.Validate(null, errors));
        }
    }
}